To the OP I don't mean to hijack this thread but I also have 2-4 ohm JL w3v3s I can't decide between these two amps. I am going to build a ported box to tuned to 30 hz.
JBL GTO-601.1 http://www.woofersetc.com/index.cfm?fuseaction=product.display&Product_ID=235
and
The TMA T1000.1...